The effects of thoracic load carriage on maximal ambulatory work tolerance and acceptable work durations
Purpose Torso loads restrict chest-wall movement and ventilation, particularly during heavy exercise. Therefore, the differential impact of load carriage and chest-wall restriction was investigated during progressive treadmill exercise. In addition, acceptable work durations were derived across a wi...
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| Veröffentlicht in: | European journal of applied physiology 2016-03, Vol.116 (3), p.635-646 |
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| container_title | European journal of applied physiology |
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| creator | Peoples, Gregory E. Lee, Daniel S. Notley, Sean R. Taylor, Nigel A.S. |
| description | Purpose
Torso loads restrict chest-wall movement and ventilation, particularly during heavy exercise. Therefore, the differential impact of load carriage and chest-wall restriction was investigated during progressive treadmill exercise. In addition, acceptable work durations were derived across a wide range of submaximal, loaded exercise intensities.
Methods
Twelve males participated in two research phases. Phase 1: Three incremental treadmill tests until exhaustion [control (clothing only), load carriage (clothing plus 22-kg vest), and clothing with chest strapping]. Phase 2: Five steady-state exercise trials (clothing plus 22-kg vest) at intensities from 30 to 80 % of peak aerobic power to determine maximal acceptable work durations.
Results
Maximal work tolerance [control 17.21 min (±0.93); loaded 13.44 min (±0.68); strapped 17.00 min (±0.83)] and the mass-specific peak aerobic power [control 61.61 mL kg
−1
min
−1
(±2.28); loaded 45.42 mL kg
−1
min
−1
(±1.41); strapped 59.99 mL kg
−1
min
−1
(±1.61)] were reduced only when loaded (
P
|
| doi_str_mv | 10.1007/s00421-015-3323-5 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1765112585</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3949851401</sourcerecordid><originalsourceid>FETCH-LOGICAL-c490t-6a8c8e6cb3867c69618d309c73721c0eafce06a64d5f043312723e5f3b5326d3</originalsourceid><addsrcrecordid>eNp1kU9r3DAQxUVpyP8PkEsQ9NKL25HGku1jCWlTCPSydzGWx1mntrWVbJL99vXiNIRATzMwv3kzvCfElYIvCqD4mgByrTJQJkPUmJkP4lTlWGUWdfHxtVfViThL6REASq3KY3GibYGVATwV282WJbct-ynJ0MppGyL5zss-UCM9xdjRA8swyoGeu4F6SUM99zSFuJdPIf6WU-g50uhZ0thI8p53E9U9r9NmjjR1YUwX4qilPvHlSz0Xm--3m5u77P7Xj5833-4zn1cwZZZKX7L1NZa28LayqmwQKl9goZUHptYzWLJ5Y1rIEZUuNLJpsTaobYPn4vMqu4vhz8xpckOXPPc9jRzm5FRhjVLalGZBP71DH8Mcx-W5A5VbXSqEhVIr5WNIKXLrdnHxIe6dAndIwa0puCUFd0jBHZSvX5TneuDmdeOf7QugVyAto_GB45vT_1X9C587keE</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1764628130</pqid></control><display><type>article</type><title>The effects of thoracic load carriage on maximal ambulatory work tolerance and acceptable work durations</title><source>MEDLINE</source><source>SpringerLink Journals - AutoHoldings</source><creator>Peoples, Gregory E. ; Lee, Daniel S. ; Notley, Sean R. ; Taylor, Nigel A.S.</creator><creatorcontrib>Peoples, Gregory E. ; Lee, Daniel S. ; Notley, Sean R. ; Taylor, Nigel A.S.</creatorcontrib><description>Purpose
Torso loads restrict chest-wall movement and ventilation, particularly during heavy exercise. Therefore, the differential impact of load carriage and chest-wall restriction was investigated during progressive treadmill exercise. In addition, acceptable work durations were derived across a wide range of submaximal, loaded exercise intensities.
Methods
Twelve males participated in two research phases. Phase 1: Three incremental treadmill tests until exhaustion [control (clothing only), load carriage (clothing plus 22-kg vest), and clothing with chest strapping]. Phase 2: Five steady-state exercise trials (clothing plus 22-kg vest) at intensities from 30 to 80 % of peak aerobic power to determine maximal acceptable work durations.
Results
Maximal work tolerance [control 17.21 min (±0.93); loaded 13.44 min (±0.68); strapped 17.00 min (±0.83)] and the mass-specific peak aerobic power [control 61.61 mL kg
−1
min
−1
(±2.28); loaded 45.42 mL kg
−1
min
−1
(±1.41); strapped 59.99 mL kg
−1
min
−1
(±1.61)] were reduced only when loaded (
P
< 0.05). Peak minute ventilation was retained, although loading and chest strapping reduced the breathing reserve. The lower and upper acceptable work duration derivations when working at the 30 % intensity were 133.40 min (±23.77) and 220.10 min (±48.69), but at 80 % intensity, both durations were reduced to <7 min.
Conclusion
Thoracic loading significantly reduced exercise tolerance and the breathing reserve, but did not modify peak minute ventilation or the absolute peak aerobic power. Chest strapping, as used herein, exerted minimal impact. However, the projected maximal acceptable work durations were much less than derived using previously published methods.</description><identifier>ISSN: 1439-6319</identifier><identifier>EISSN: 1439-6327</identifier><identifier>DOI: 10.1007/s00421-015-3323-5</identifier><identifier>PMID: 26739503</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Adult ; Biomedical and Life Sciences ; Biomedicine ; Exercise ; Exercise - physiology ; Exercise Tolerance ; Fatigue ; Heart rate ; Human Physiology ; Humans ; Male ; Metabolism ; Occupational Medicine/Industrial Medicine ; Original Article ; Physical fitness ; Physiology ; Respiratory Muscles - physiology ; Sports Medicine ; Torso - physiology ; Work of Breathing</subject><ispartof>European journal of applied physiology, 2016-03, Vol.116 (3), p.635-646</ispartof><rights>Springer-Verlag Berlin Heidelberg 2016</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c490t-6a8c8e6cb3867c69618d309c73721c0eafce06a64d5f043312723e5f3b5326d3</citedby><cites>FETCH-LOGICAL-c490t-6a8c8e6cb3867c69618d309c73721c0eafce06a64d5f043312723e5f3b5326d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00421-015-3323-5$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00421-015-3323-5$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26739503$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Peoples, Gregory E.</creatorcontrib><creatorcontrib>Lee, Daniel S.</creatorcontrib><creatorcontrib>Notley, Sean R.</creatorcontrib><creatorcontrib>Taylor, Nigel A.S.</creatorcontrib><title>The effects of thoracic load carriage on maximal ambulatory work tolerance and acceptable work durations</title><title>European journal of applied physiology</title><addtitle>Eur J Appl Physiol</addtitle><addtitle>Eur J Appl Physiol</addtitle><description>Purpose
Torso loads restrict chest-wall movement and ventilation, particularly during heavy exercise. Therefore, the differential impact of load carriage and chest-wall restriction was investigated during progressive treadmill exercise. In addition, acceptable work durations were derived across a wide range of submaximal, loaded exercise intensities.
Methods
Twelve males participated in two research phases. Phase 1: Three incremental treadmill tests until exhaustion [control (clothing only), load carriage (clothing plus 22-kg vest), and clothing with chest strapping]. Phase 2: Five steady-state exercise trials (clothing plus 22-kg vest) at intensities from 30 to 80 % of peak aerobic power to determine maximal acceptable work durations.
Results
Maximal work tolerance [control 17.21 min (±0.93); loaded 13.44 min (±0.68); strapped 17.00 min (±0.83)] and the mass-specific peak aerobic power [control 61.61 mL kg
−1
min
−1
(±2.28); loaded 45.42 mL kg
−1
min
−1
(±1.41); strapped 59.99 mL kg
−1
min
−1
(±1.61)] were reduced only when loaded (
P
< 0.05). Peak minute ventilation was retained, although loading and chest strapping reduced the breathing reserve. The lower and upper acceptable work duration derivations when working at the 30 % intensity were 133.40 min (±23.77) and 220.10 min (±48.69), but at 80 % intensity, both durations were reduced to <7 min.
Conclusion
Thoracic loading significantly reduced exercise tolerance and the breathing reserve, but did not modify peak minute ventilation or the absolute peak aerobic power. Chest strapping, as used herein, exerted minimal impact. However, the projected maximal acceptable work durations were much less than derived using previously published methods.</description><subject>Adult</subject><subject>Biomedical and Life Sciences</subject><subject>Biomedicine</subject><subject>Exercise</subject><subject>Exercise - physiology</subject><subject>Exercise Tolerance</subject><subject>Fatigue</subject><subject>Heart rate</subject><subject>Human Physiology</subject><subject>Humans</subject><subject>Male</subject><subject>Metabolism</subject><subject>Occupational Medicine/Industrial Medicine</subject><subject>Original Article</subject><subject>Physical fitness</subject><subject>Physiology</subject><subject>Respiratory Muscles - physiology</subject><subject>Sports Medicine</subject><subject>Torso - physiology</subject><subject>Work of Breathing</subject><issn>1439-6319</issn><issn>1439-6327</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kU9r3DAQxUVpyP8PkEsQ9NKL25HGku1jCWlTCPSydzGWx1mntrWVbJL99vXiNIRATzMwv3kzvCfElYIvCqD4mgByrTJQJkPUmJkP4lTlWGUWdfHxtVfViThL6REASq3KY3GibYGVATwV282WJbct-ynJ0MppGyL5zss-UCM9xdjRA8swyoGeu4F6SUM99zSFuJdPIf6WU-g50uhZ0thI8p53E9U9r9NmjjR1YUwX4qilPvHlSz0Xm--3m5u77P7Xj5833-4zn1cwZZZKX7L1NZa28LayqmwQKl9goZUHptYzWLJ5Y1rIEZUuNLJpsTaobYPn4vMqu4vhz8xpckOXPPc9jRzm5FRhjVLalGZBP71DH8Mcx-W5A5VbXSqEhVIr5WNIKXLrdnHxIe6dAndIwa0puCUFd0jBHZSvX5TneuDmdeOf7QugVyAto_GB45vT_1X9C587keE</recordid><startdate>20160301</startdate><enddate>20160301</enddate><creator>Peoples, Gregory E.</creator><creator>Lee, Daniel S.</creator><creator>Notley, Sean R.</creator><creator>Taylor, Nigel A.S.</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7RV</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>8AO</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M7P</scope><scope>NAPCQ</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope></search><sort><creationdate>20160301</creationdate><title>The effects of thoracic load carriage on maximal ambulatory work tolerance and acceptable work durations</title><author>Peoples, Gregory E. ; Lee, Daniel S. ; Notley, Sean R. ; Taylor, Nigel A.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c490t-6a8c8e6cb3867c69618d309c73721c0eafce06a64d5f043312723e5f3b5326d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Adult</topic><topic>Biomedical and Life Sciences</topic><topic>Biomedicine</topic><topic>Exercise</topic><topic>Exercise - physiology</topic><topic>Exercise Tolerance</topic><topic>Fatigue</topic><topic>Heart rate</topic><topic>Human Physiology</topic><topic>Humans</topic><topic>Male</topic><topic>Metabolism</topic><topic>Occupational Medicine/Industrial Medicine</topic><topic>Original Article</topic><topic>Physical fitness</topic><topic>Physiology</topic><topic>Respiratory Muscles - physiology</topic><topic>Sports Medicine</topic><topic>Torso - physiology</topic><topic>Work of Breathing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Peoples, Gregory E.</creatorcontrib><creatorcontrib>Lee, Daniel S.</creatorcontrib><creatorcontrib>Notley, Sean R.</creatorcontrib><creatorcontrib>Taylor, Nigel A.S.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Nursing & Allied Health Database</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>Nursing & Allied Health Premium</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><jtitle>European journal of applied physiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Peoples, Gregory E.</au><au>Lee, Daniel S.</au><au>Notley, Sean R.</au><au>Taylor, Nigel A.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The effects of thoracic load carriage on maximal ambulatory work tolerance and acceptable work durations</atitle><jtitle>European journal of applied physiology</jtitle><stitle>Eur J Appl Physiol</stitle><addtitle>Eur J Appl Physiol</addtitle><date>2016-03-01</date><risdate>2016</risdate><volume>116</volume><issue>3</issue><spage>635</spage><epage>646</epage><pages>635-646</pages><issn>1439-6319</issn><eissn>1439-6327</eissn><abstract>Purpose
Torso loads restrict chest-wall movement and ventilation, particularly during heavy exercise. Therefore, the differential impact of load carriage and chest-wall restriction was investigated during progressive treadmill exercise. In addition, acceptable work durations were derived across a wide range of submaximal, loaded exercise intensities.
Methods
Twelve males participated in two research phases. Phase 1: Three incremental treadmill tests until exhaustion [control (clothing only), load carriage (clothing plus 22-kg vest), and clothing with chest strapping]. Phase 2: Five steady-state exercise trials (clothing plus 22-kg vest) at intensities from 30 to 80 % of peak aerobic power to determine maximal acceptable work durations.
Results
Maximal work tolerance [control 17.21 min (±0.93); loaded 13.44 min (±0.68); strapped 17.00 min (±0.83)] and the mass-specific peak aerobic power [control 61.61 mL kg
−1
min
−1
(±2.28); loaded 45.42 mL kg
−1
min
−1
(±1.41); strapped 59.99 mL kg
−1
min
−1
(±1.61)] were reduced only when loaded (
P
< 0.05). Peak minute ventilation was retained, although loading and chest strapping reduced the breathing reserve. The lower and upper acceptable work duration derivations when working at the 30 % intensity were 133.40 min (±23.77) and 220.10 min (±48.69), but at 80 % intensity, both durations were reduced to <7 min.
Conclusion
Thoracic loading significantly reduced exercise tolerance and the breathing reserve, but did not modify peak minute ventilation or the absolute peak aerobic power. Chest strapping, as used herein, exerted minimal impact. However, the projected maximal acceptable work durations were much less than derived using previously published methods.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>26739503</pmid><doi>10.1007/s00421-015-3323-5</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1439-6319 |
| ispartof | European journal of applied physiology, 2016-03, Vol.116 (3), p.635-646 |
| issn | 1439-6319 1439-6327 |
| language | eng |
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| source | MEDLINE; SpringerLink Journals - AutoHoldings |
| subjects | Adult Biomedical and Life Sciences Biomedicine Exercise Exercise - physiology Exercise Tolerance Fatigue Heart rate Human Physiology Humans Male Metabolism Occupational Medicine/Industrial Medicine Original Article Physical fitness Physiology Respiratory Muscles - physiology Sports Medicine Torso - physiology Work of Breathing |
| title | The effects of thoracic load carriage on maximal ambulatory work tolerance and acceptable work durations |
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